US3038787A - Equipment for handling dangerous substances - Google Patents

Equipment for handling dangerous substances Download PDF

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Publication number
US3038787A
US3038787A US10114A US1011460A US3038787A US 3038787 A US3038787 A US 3038787A US 10114 A US10114 A US 10114A US 1011460 A US1011460 A US 1011460A US 3038787 A US3038787 A US 3038787A
Authority
US
United States
Prior art keywords
chamber
window
equipment
base plate
turntable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US10114A
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English (en)
Inventor
Bagnall Kenneth Winfield
Robertson Daniel Stewart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Application granted granted Critical
Publication of US3038787A publication Critical patent/US3038787A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J21/00—Chambers provided with manipulation devices
    • B25J21/02—Glove-boxes, i.e. chambers in which manipulations are performed by the human hands in gloves built into the chamber walls; Gloves therefor

Definitions

  • equipment for use in carrying out operations on or treatments to a toxic substance comprises a gas tight chamber substantially circular in plan, a window of transparent substance in the wall of the chamber, glove-ports in the window, a table within the chamber below the level of the glove-ports and is characterised in that a port is provided in the table and ports are provided in the base plate of the chamber with which said port in the table may be brought into register by relative rotation of the table and the chamber whereby articles or substances can be introduced or withdrawn from the chamber through said ports when in register.
  • the chamber may be provided with a horizontally extending passageway which is adapted to be attached to the underside of the base plate of the chamber and which registers with a port in the said base plate.
  • FIG. 1 is a part sectional front elevation of a gas tight chamber and its supporting stand.
  • FIG. 2 is a sectional plan on the line IIII of FIG. 1 with the turntable removed.
  • FIG. 3 is a sectional elevation of the turntable bearing assembly.
  • FIG. 4 is a plan of the turntable.
  • FIG. 5 is a plan of the turntable tray.
  • FIG. 6 is an isometric view of a trunking connecting plate.
  • FIG. 7 is an isometric view of a trunking sealing plate.
  • FIG. 8 is a diagrammatic plan of a series of chambers arranged in a laboratory.
  • a gas tight chamber 1 which is supported on a tubular steel framework 2, comprises a cylindrical shell 3 closed at its upper end by a domed roof 4- of convex configuration and at its lower end by a plane circular base-plate 5.
  • Two lifting eyes 6 are provided on the roof at the ends of the diameter normal to a viewing window 7; an explosion port 3 is fitted at the centre of the convex roof and this consists of a circular port on which rests a rubber beach ball 9.
  • the latter is contained inside a plastic (PVC) sleeve it which is connected to the laboratory extract system (not shown).
  • PVC plastic
  • the ball 9 lifts, releasing the pressure.
  • the lead 11 from a CO -type fire extinguisher 12 which is clipped to the wall adjacent to the viewing window, enters the chamber close to the explosion port.
  • the plane viewing window 7 in which two glove ports 13 and 14 are fixed is placed along a tangent to the chamber walls.
  • Four permanent reagent (not shown) leads extend into the chamber through the roof above the viewing window.
  • a venturi air-ejector (not shown) secured to the outer surface of the chamber, extracts air from within the chamber via an aperture 15 in the chamber wall and a filter for the air so extracted is fitted inside the chamber atent O1 3,038,787 Patented June 12, 1962 ice and is contained in a close fitting box 16 welded on to the wall on the left hand side of the viewing window 7.
  • a port 17 referred to as a posting port is arranged in the wall on the side opposite to the filter; this permits the posting in of new equipment.
  • the Window 7 is double glazed in order to guard against the accidental release of radioactivity into the laboratory.
  • the inner pane 18, in which the glove-ports 13 and 14 are fixed, is held against a neoprene gasket on an extension 19 to the wall of the box by means of countersunk head set screws.
  • the outer window 20 is bolted on to a wide flange 21 welded to this window extension; the flange 21 is provided so that the chamber can be attached to an opening in the wall. of a frog-suit area for decontamination or repair.
  • the space between the two panes 18 and 20 is maintained under slightly reduced pressure by applying suction to a pipe 22 at the top of'the said space and the exhaust from this is fed into an extract duct (not shown). There is therefore a continuous flow of ambient air through the space between the window panes 18 and 20, so that any radioactive particles which may escape from the chamber 1, in the region of the window will mostly be carried up into the extract system.
  • a number of access ports comprising a centrifuge posting port 23 a communication port 24 and a trash disposal port 25 are formed in the base plate 5 and are adapted to be covered by hinged lids 26, 27 and 28 respectively.
  • a turntable 29 inside the chamber 1 is mounted on a flanged central rotatable member 30 and is supported on castors 31 spaced evenly round the periphery. These castors run on a circular strip 32 placed on the upper face of the base plate 5 and may be unscrewed from the turntable 29 for servicing inside the chamber.
  • Bearing 33 is provided with grease channels in its vertical and horizontal surfaces, the grease being supplied by a screwup greaser 34 fitted to the end surface of member 30 which projects below the base plate 5.
  • the bearing is sealed against leakage of radioactive dust by an O-ring seal 35 positioned below the base of the chamber, in such a manner that the seal 35 can be replaced without risk of an escape of radioactivity.
  • the turntable 29 is made divisible along a diameter, the two halves being connected by fastening them on to metal T-section ribs.
  • a sector shaped hole 36 is cut out of the turntable 29 to permit access to ports 23, 24 and 25 in the base-plate.
  • a shield (not shown) is welded to the bottom of the window extension for the same reason.
  • the rim 38 of the turntable 29 may be provided with upright projections which serve as hand-holds to assist in rotating it. If necessary, the turntable 29 may be rotated by means of an electric motor.
  • a brake 41 is permanently applied to the extension of the rotatable member 30 which projects through the base-plate 5. Thls may be released by applying pressure to a foot pedal 42 mounted on the lower part of the chamber supporting framework 2.
  • Each of the chambers 1 is therefore provided with a horizontally extending passageway, comprising a length of square section ducting 43 fitted parallel to the window 7 of the chamber and connected to the underside of the base plate of the chamber, by a length of large diameter tubing 44.
  • a small window 45 is provided on the face of the duct at the junction with this tubing 44.
  • the ends of the duct 43 are flanged and are provided with grooves 46, the faces of which are ground and into which slide apertured connecting plates 47 or sealing plates 48.
  • the connecting plates 47 (FIG. 6) which are well greased, unite two chambers in an airtight manner, while the sealing plates 48 (FIG. 7) which are similar in outline to the connecting plate but cleft vertically, enable a chamber to be separated from its neighbour without exposing the contaminated inner surface of the duct.
  • the mode of operation is as follows; when it is desired to disconnect a chamber, a plate receiver box (not shown) is attached to the rear of the duct flanges, and sealing plates 48 as a pair, are pushed into position, forcing the connecting plate 47 into the receiver box.
  • Transport of material from one chamber to another is effected by means of a small electrically propelled trolley 53 running in the duct 43.
  • This trolley is driven by an electric motor mounted on one end, the power supply being fed in by a trailing cable which is kept taut by a self-winding reel; this may be housed in a chamber attached to the end of the duct.
  • the trolley is mounted on rubber-tyred wheels 54 and is aligned in the duct 43 by two pairs of similar wheels 55 on the sides of the trolley.
  • the circular supporting framework 2 for each chamber is constructed of tubular members and is supported on three castors 49 for easy movement; the weight of the chamber and stand when in the working position is taken on three screwjacks 50 so that the chamber cannot be moved.
  • a lower ring 56 of the framework carries the brake pedal 42- which is connected to the tumtable brake 41 by .a Bowden cable 62.
  • the inside of the chamber 1 including the turntable 29 is painted with white epoxyresin paint; externally each chamber may be painted a different colour for easy identification in the event of an accident.
  • an epoxyresin paint finish has a relatively high resistance to corrosive vapours, a chamber moulded from fibre-glass may be used for work under extreme conditions.
  • the table within the chamber may be held stationary and the chamber rotated about its vertical axis to provide the relative motion required to bring the table opening and the ports in the chamber base plate into register.
  • Equipment for use in carrying out operations on or treatment to a toxic substance comprising a gas tight chamber having a wall substantially circular in plan, a base plate and a roof secured to said circular wall, a window of transparent substance in the wall, glove ports in the window, a table within the chamber below the level of the glove ports, means defining a transfer port in the table and an opening .and closing door in the base plate registrable with said transfer port by relative rotation between said table and said base plate.
  • Equipment for use in carrying out operations on or treatments to a toxic substance comprising a gas tight chamber having a wall substantially circular in plan, a base plate and a roof secured to said circular wall, a window of transparent substance in the wall, glove ports in the window, an opening and closing door in said base plate, a turntable below the level of the glove ports rotatable about the vertical central axis of the chamber and means defining a transfer port in the table .adapted to register with said opening and closing door in the base plate.
  • Equipment for use in carrying out operations on or treatments to a toxic substance comprising a gas tight chamber having a wall substantially circular in plan, a base plate and a roof secured to said circular wall, a window of transparent substance in the wall, glove ports in the window, a turntable below the level of the glove ports rotatable about the vertical central axis of the chamber means defining a transfer port in the table, an opening and closing door in said base plate, a horizontally extending tubular passageway under the base plate and a transfer passage between said passageway and said opening and closing door in the base plate.
  • a set of equipments for use in carrying out operations on or treatments to a toxic substance comprising a plurality of gas tight chambers connected in series each having a wall substantially circular in plan, a base plate and a roof secured to said circular wall, a window of transparent substance in the wall, glove ports in the window, a turntable below the level of the glove-ports rotatable about the vertical axis of the chamber, an opening and closing door in said base plate, means defining a transfer port in the table, a horizontal tubular passageway under the base plate, a transfer passage between said passageway and said opening and closing door in the base plate registrable with said transfer port and connecting means between contiguous end surfaces of each passageway in the series to form a common passageway.
  • a set of equipment as claimed according to claim 5 wherein the connecting means comprises an apertured rectangular plate, a flange at the ends of each passageway having grooves receiving the parallel sides of the rectangular plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manipulator (AREA)
US10114A 1959-03-03 1960-02-23 Equipment for handling dangerous substances Expired - Lifetime US3038787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7309/59A GB887367A (en) 1959-03-03 1959-03-03 Improvements in or relating to equipment for handling dangerous substances

Publications (1)

Publication Number Publication Date
US3038787A true US3038787A (en) 1962-06-12

Family

ID=9830665

Family Applications (1)

Application Number Title Priority Date Filing Date
US10114A Expired - Lifetime US3038787A (en) 1959-03-03 1960-02-23 Equipment for handling dangerous substances

Country Status (4)

Country Link
US (1) US3038787A (fr)
BE (1) BE588201A (fr)
FR (1) FR1250185A (fr)
GB (1) GB887367A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790347A (en) * 1971-12-30 1974-02-05 Nasa Apparatus for remote handling of materials
CN103358326A (zh) * 2012-03-28 2013-10-23 绿种子科技(潍坊)有限公司 手套箱及使用此手套箱之薄膜沉积设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2074780B1 (fr) * 1970-01-28 1974-06-14 Commissariat Energie Atomique
DE4422419A1 (de) * 1994-06-29 1996-01-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glove-Box

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786740A (en) * 1954-07-09 1957-03-26 Air Reduction Special atmosphere device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786740A (en) * 1954-07-09 1957-03-26 Air Reduction Special atmosphere device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790347A (en) * 1971-12-30 1974-02-05 Nasa Apparatus for remote handling of materials
CN103358326A (zh) * 2012-03-28 2013-10-23 绿种子科技(潍坊)有限公司 手套箱及使用此手套箱之薄膜沉积设备

Also Published As

Publication number Publication date
FR1250185A (fr) 1961-01-06
BE588201A (fr) 1960-07-01
GB887367A (en) 1962-01-17

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